Improvement in folding-chairs



@M2M @wie `Letters Patent No. 107,708, dated September 27, 1870.

IMPROVEMENT |'N FoLmNe-.cnnme To all whom'z'tmay concern- 'S Beit known that S I, JULIUs NSrcoLAr, of Boston, `in the county of Suffolk andState of Massachusetts, llave invented. Acertain new and useful Improvements,` l S following is a Afulland exactdescriptionthereof,` reference being had to the accompanying drawings and to the lettersof reference' marked thereon. My inventionrelates particularly Sto an improye- S vment in that class of `folding-chairs described in Uni ted States Letters :Patent N 0.171,44@ granted to me, cachV chair -having icrossing legs, or leg-frames, anda plane. S S. S S S l SInmy present/chair the parts are made to simultaneously foldin thesame, or. substantially the same S manneras is shownlinS the `:folding-chair patented `by myselfand Philip 3J. "Itinn,-50ctober 26, 1869, No. 96,139, `and my improvement *Sis shown -in the accom# t pan'yiug l drawings ias` embodied '.upou such Nicolai and-Rinn-chair, said improvement consisting in Scom-` bining the frameformedbytlleextensionzotone pair lof the legs with an auxiliaryqnadrangnlar frame, the l Svertical bars of which are placed between the vertical S bars of the main` Trame,`and in an angular plane relatively `thereto,while the top and bottomb'ars are placed, the former `in `front and the latter-inrear of the main frame,th`is auxiliary fralne,when upholstered, constituting the most easy and practical baokfrest that can be appliedto these chairs. S l SS In the Nicolai and Rinn chair, shfown -in their patent, No. 96,139, this auxiliary frameis not employed, l the npholsterybeing fastened to top and bottom cross- S bars andV the mainframepieces,'but such construction is defective, andthe objections toit are entirely obvi- S lated by my improvement.S S S l `In the drawings- S Figure 41l is a perspective view of my chair open ready foran occupant. n Y

Figure 2 isga section of my chair as 'it .appears Si folded. S S S l f I construet'mychair as follows:

`B B', `fig. 1,Sform thebaSckS and `two legs, and are framed together by means of a rung, N, and the cross'- 'pieces O and F, the upper cernes-baril*1 beingattached S in Folding-Chairs;` and Ido hereby declare-that the 'by the rung L M.

The Schedule referred -to imthese Letters Patent and making part of the same.I

to the front of the pieces B B', while the lower cross-` bar O is attached to the back.l S S 'The objectof thus attaching the cross-bars `Qand .F is to give the back of the chair a more desirable angle than would be obtained if. both crosssbars were attached to the same side of the pieces B B'.

vA A are two pieces forming the rear legs of a chair and part of the arms, being connected together by means of a rung, N', at the lower extremities, and a rung, L M, near the upper extremities.

"lhe parts A A'are connected t-o the parts B B' by the pivots H H'. llingedback, all folding Stogether'into substantially one l G C represent .the frame of the seat of the chair, and is hinged, as shown in lie. 1, to the parts B B', land, being otherwise supported, .when the chair is open,

'P Q and P Q', figs. 1 and 2, are strong loops, made of4 suitable material, and attached tothe underside. of the seat, as shown in the drawings, so that the rung L M passes through the loops thus formed.

By this arrangement the legs A A and seat O both move together.

The outerends P Pof the loops form a convenient' stop for the rung L M, and give suitable rigidity to the chair.

The parts sodescribed constitute the Nicolai and R-inn chair, and in my improvement, as shown in the drawings, I' extend, from each side of the upper cross- `bar F to the corresponding side of the lower cross-bar S O, avertical bar, S, the twobars F O and the two bars S S making a strong and rigid frame, properly adapted, when upholstered, to support the back ofthe occupant of the chair 4in a comfortable and healthy position..

ISclaim- 111 combination with folding cross-legs or frames and a vfolding-seat, a back-frame, F O, S S, when arranged relatively to the parts B B', substantially as shown and described.

- J. N IGOLAI.

Witnesses:

FRANK G. PARKER, A. HUN BERRY. 

